浅埋灰岩含水层互嵌式射流改造方法研究  

Study on Reconstruction Method of Shallow Limestone Aquifer Based on Each Embedded Jetting

作　　者：刘再斌 LIU Zai-bin1,2(1. Xi＇an Research Institute Company, China Coal Technology and Engineering Group, Xi＇an 710054, China; 2. School of Environmental Science and Engineering, Chang＇an University, Xi＇an 710054, Chin)

机构地区：[1]中煤科工集团西安研究院有限公司,西安710054 [2]长安大学环境科学与工程学院,西安710054

出　　处：《煤炭技术》2018年第6期46-48,共3页Coal Technology

基　　金：国家重点研发计划项目(2017YFC0804102);中煤科工集团西安研究院有限公司科技创新基金面上项目(2015XAYMS17)

摘　　要：针对浅部灰岩含水层无法采用地面定向钻进技术进行区域治理的难题,引入射流造孔技术,实现对下组煤开采浅部灰岩含水层的注浆改造。分析了射流孔岩屑堆积影响因素,提出注浆条件改善工艺。设计了单孔三分支布孔形式,形成射流孔注浆施工流程。通过直孔梅花形布孔和互嵌式射流布孔实现对治理区域全面覆盖。In order to solve the shallow limestone aquifer reconstruction problem for which the directional drilling technique can＇t be applied, radial jet drilling was introduced to form the shallow blind-area free grouting technique. Grouting condition improvement process was put forward by analyzing influencing factors of rock powder deposit. A single hole and three branches are designed to form a jetting grouting construction process. Based on plum-shaped vertical holes and each embedded jetting holes, the control area can be fully covered.

关 键 词：射流造孔 浅部灰岩 单孔三分支 

分 类 号：TD745[矿业工程—矿井通风与安全]